JPS59222912A - Foil wound transformer - Google Patents

Foil wound transformer

Info

Publication number
JPS59222912A
JPS59222912A JP9688783A JP9688783A JPS59222912A JP S59222912 A JPS59222912 A JP S59222912A JP 9688783 A JP9688783 A JP 9688783A JP 9688783 A JP9688783 A JP 9688783A JP S59222912 A JPS59222912 A JP S59222912A
Authority
JP
Japan
Prior art keywords
duct
cooling duct
cooling
winding
refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9688783A
Other languages
Japanese (ja)
Inventor
Shinya Ikeda
池田 信也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP9688783A priority Critical patent/JPS59222912A/en
Publication of JPS59222912A publication Critical patent/JPS59222912A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/10Liquid cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

PURPOSE:To manufacture a cooling duct contained in a wound wire easily, by a method where in a long pipe with flat cross-section is bent in zigzag form. CONSTITUTION:A long pipe with flat cross-section made of metal or heat-resisting plastics is bent up and down in zigzag form so that the flat surface contacts with a metal sheet or an insulating sheet and then the bent pipe is curved into cylindrical form thereby a cooling duct 21 is constituted. One end of the pipe 20 with flat cross-section extends downwards and is made a cooling medium inlet 22a, and other end thereof extends upwards and is made a cooling medium outlet 22b. When a foil wound wire 4 is manufactured the cooling duct 21 is wound together and contained in the wound wire.

Description

【発明の詳細な説明】 [発明の技術分野] 本発明は金属シートと絶縁シートを重ねて巷いた陥状巻
糾を備え、かつ巻線内C二冷媒が通される冷却ダクトを
内蔵した箔巷変圧器i二関する。
[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a foil that is provided with a recessed winding formed by overlapping a metal sheet and an insulating sheet, and that has a built-in cooling duct through which a C2 refrigerant is passed through the winding. There are two transformers involved.

[発明の技術的背景とその問題点] 箔巻巻線を備えた箔巻変圧器は、占積率がよく、小形・
軒桁化を実現できる特長があるため番二、数kV 数1
00 kVA程度の比較的電圧の低い小容量の変圧器に
おいてはすでC二実用化され、ている。
[Technical background of the invention and its problems] A foil-wound transformer equipped with a foil-wound winding has a good space factor, and is small and compact.
Number 2, several kV number 1 because it has the feature of realizing eave girder.
C2 has already been put into practical use in small capacity transformers with relatively low voltages of about 0.00 kVA.

最近、その優れた長所C鑑み、より高電圧・大容量の変
圧器例えば275 kV、3 Q Q MVA f圧5
C二も適用拡大が研究きれているが、最大の技術的問題
点はいかに冷却能力を向上させ、高い絶縁能力を巻線3
二もたせられるがという点である。まだこのような高電
圧大容量変圧器は実用化は妊れていないが、この箔巻変
圧器の冷却方式としては、巻線内に冷却ダクトを内蔵さ
せ、絶縁特性の秀れた冷媒を送り込んで巻腺接失がら発
生する僕を直接的に冷やす、いわばヒートパイプ式のも
のが考えられている。
Recently, in view of its excellent advantages, higher voltage/larger capacity transformers such as 275 kV, 3 Q Q MVA f voltage 5
Research has been completed on expanding the application of C2, but the biggest technical problem is how to improve cooling capacity and how to achieve high insulation capacity by winding 3.
The point is that you can have both. Although such high-voltage, large-capacity transformers have not yet been put into practical use, the cooling method for this foil-wound transformer is to have a cooling duct built into the windings to feed a refrigerant with excellent insulation properties. A type of heat pipe is being considered that directly cools the air that is generated by the glands.

第1図はこのような冷却方式の箔巻変圧器として従来鳴
えられているものを示したもので、図中4f′i鉄心生
脚1aの外観C二咎刀・九た低圧上瞼、4bil−を前
記低圧巻線4aの外側inn縁縁バーリヤを介して巻か
れた高圧巻線であり、これら巷紛4a。
Figure 1 shows a conventional foil-wound transformer using such a cooling method. 4bil- is a high-voltage winding wound through the outer inn edge barrier of the low-voltage winding 4a, and these strips 4a.

4bは金属シート2と絶縁シート3をlねてイどいた箔
巻巻線とされている。6は前Hじ箔巻巻線4a。
Reference numeral 4b is a foil-wound wire formed by wrapping the metal sheet 2 and the insulating sheet 3 together. 6 is the front H foil-wound winding 4a.

4b内の適所にそれぞれ内蔵されたステンレスまたは銅
等の金属からなる冷却ダクトであり、この冷却ダクト6
は巻線中に一緒に巻込まtしている。
These cooling ducts are made of metal such as stainless steel or copper and are built into appropriate places in each cooling duct 6.
are rolled together in the winding.

この冷却ダクト6内には、フロンR−113や)C75
等の冷媒が通されるようf二なっており、この冷媒は冷
却ダクト6内を通る過程で巻線内の発熱を奪って巻線を
冷却する。そしてこの冷媒は、凝縮器8において水冷却
により冷却されて冷媒は冷媒タンク14に貯められてポ
ンプ7により巻線内f1送り込まれる。すなわちこの冷
媒循環回路と変圧器とは分離されている。また、冷媒を
導びく導液管10はステンレスまたFi銅などの金属で
作られているが、それとa却ダクト6との接続には絶縁
バイブ11が用いられている。また、導液管10け変圧
器タンク12などのアース電位と電気的に接続されてお
り、冷却ダクト6は巻線内(二巻き込まれている1杓係
上近接する金属シート2と同じ電位に電気的に結合され
ている。また、金属シート2の各巻層間は変圧器タンク
12内(二刊人された絶縁油を)るいはSF6ガスとい
った絶縁媒体で絶縁されている。
Inside this cooling duct 6, Freon R-113 and) C75
This refrigerant cools the windings by removing heat from the windings in the process of passing through the cooling duct 6. This refrigerant is cooled by water cooling in the condenser 8, stored in a refrigerant tank 14, and sent into the winding f1 by the pump 7. That is, the refrigerant circulation circuit and the transformer are separated. Further, the liquid guide pipe 10 that guides the refrigerant is made of metal such as stainless steel or Fi copper, and an insulating vibrator 11 is used to connect it to the a-cooling duct 6. In addition, it is electrically connected to the ground potential of the transformer tank 12 with 10 liquid guide pipes, etc., and the cooling duct 6 is at the same potential as the metal sheet 2 in the winding (one ladle that is wound two times) and the adjacent metal sheet 2. The layers of the metal sheet 2 are electrically connected to each other and are insulated between each winding layer of the metal sheet 2 by an insulating medium such as within the transformer tank 12 (using insulating oil) or SF6 gas.

この冷却方式の変圧器は冷却のための冷媒が流れる循環
回路と絶縁のための絶縁媒体とは完全に分離(セパレー
ト)されている。このことから、この方式の箔巻変圧器
は、特にセパレート式箔巻変圧器と呼ばれている。
In this cooling type transformer, the circulation circuit through which the refrigerant for cooling flows and the insulating medium for insulation are completely separated. For this reason, this type of foil-wound transformer is particularly called a separate foil-wound transformer.

しかしながら、上h1゛1従来の変圧器は、巷紳4゜5
内番二内蔵する冷却ダクト6として第2図に示ずような
筒状ダクトまたは第3図に示すよう々分割形の筒状タク
トを用いているために、次のような問題点をもっている
However, the conventional transformer of H1゛1 has a street width of 4゛5.
Since a cylindrical duct as shown in FIG. 2 or a divided cylindrical tact as shown in FIG. 3 is used as the internal cooling duct 6, the following problems arise.

すなわち、第2図及び第3図1−示す筒状の冷却ダクト
6においては、冷媒入口15aから流、入し7た冷媒を
ダクト全一域に均等に流してやることと、ダクト内を通
った冷却をダクト6上部に停滞させることなく冷媒出口
15bから流出さぜン・ことが必要であり、そのために
いずれの冷却ダクト6も、その下端部と上端Hs+−そ
の周方向l1沿わせてパイプ状の冷媒導液路16.16
を形成した形状と芒れている。第4図はダクト端部のl
lJr面形伏を示している。しかしながら、この冷却ダ
クト、6け、博い金属板を筒状に曲げ加工I7てその突
合わせQN&4を溶接することにより筒体を製作し、こ
の筒体を両側から前記導液路16.16となる部分を除
いて押しつぶし7て微少間隙のダクト部を形成した後に
、その両側の開かγ端を溶接により閉塞する方法で製作
しなければならないために、冷却ダクトの製作に手間が
かかるという問題がある0まブこ、前記冷却ダクト6け
、漏洩箇所がないよう■−厳密な品質管理のもとに胛作
芒れてけいるが、前記冷却ダクト6け多くの溶接箇所を
もっているために、長」υ]の使用のうちに溶接部分が
腐食等C二よって劣化したり、クラックが入ったりして
冷媒が漏れるおそオLがある。この冷b・、の漏れは、
ごく少量ずつでに4うるが、徐々に冷媒循環系内の冷媒
量が不足してくるために、冷却能力が低下して変圧器の
オーバーヒートを引き起す。従って、前記冷却ダクト6
を用いている従来の変圧器は、運転寿命が短かく、30
年程度の運転寿命を要求される電力用変圧器等f二は利
用できないとされていた。
In other words, in the cylindrical cooling duct 6 shown in FIGS. 2 and 3, the refrigerant flowing in from the refrigerant inlet 15a must be allowed to flow evenly throughout the entire area of the duct, and the refrigerant that has passed through the duct must be It is necessary for the cooling to flow out from the refrigerant outlet 15b without being stagnated in the upper part of the duct 6. For this purpose, each of the cooling ducts 6 is formed into a pipe shape along the circumferential direction l1 of the lower end and the upper end Hs+. Refrigerant liquid guide path 16.16
It has a formed shape and awns. Figure 4 shows the l of the duct end.
It shows lJr face shape. However, for this cooling duct, a cylindrical body is manufactured by bending a six-dimensional wide metal plate into a cylindrical shape and welding the butts QN&4, and this cylindrical body is connected to the liquid guide path 16, 16 from both sides. There is a problem in that it takes a lot of time to manufacture the cooling duct because the cooling duct must be manufactured by crushing the cooling duct to form a duct part with a minute gap, and then closing the open γ ends on both sides by welding. The 6 cooling ducts are carefully constructed under strict quality control to ensure that there are no leaks; however, because the 6 cooling ducts have many welded parts, While using the ``υ'', there is a possibility that the welded parts may deteriorate due to corrosion or cracks, causing the refrigerant to leak. This leakage of cold b.
Although the amount of refrigerant in the refrigerant circulation system gradually becomes insufficient, the cooling capacity decreases and the transformer overheats. Therefore, the cooling duct 6
Conventional transformers using
It was considered that F2, such as power transformers, which require an operating life of about 20 years, could not be used.

[発明の目的] 本発明は上り弓のような実情C1鑑みなされたものであ
って、その目的とするところは、冷却ダクトの製作が容
易であると共Cユ、冷却ダクトから811食やクラック
を生じやすい溶接部をなくして溶接部からの冷媒漏れの
問題をなくした、運転埒命の永い箔巻変圧器を提供する
ことにある。
[Object of the Invention] The present invention was made in view of the current situation C1, and its purpose is to make it easy to manufacture a cooling duct, and to prevent 811 corrosion and cracks from the cooling duct. To provide a foil-wound transformer which has a long operating life and eliminates the problem of refrigerant leakage from the welded part by eliminating the welded part which is likely to cause damage.

[発明の概要] すなわち、本発明の箔巻変圧器は、巻線内(二内蔵する
冷却ダクトを扁平断面のパイプを蛇行させた構成とした
ものであり、前記冷却ダクトは長尺の扁平細管を折曲す
ることで製作できるから、その製作は容易であるし、捷
た冷却ダクトから浴接部をなくすことができる。
[Summary of the Invention] That is, the foil-wound transformer of the present invention has a cooling duct built into the winding (two built-in cooling ducts made of meandering pipes with a flat cross section, and the cooling duct is a long flat thin tube). Since it can be manufactured by bending the cooling duct, it is easy to manufacture, and the bath contact part can be eliminated from the bent cooling duct.

実施例 以下、本発明の一実施例を区間を参照して紛、明する。Example An embodiment of the present invention will be explained below with reference to sections.

第5図(−)は冷却ダクト21を示しており、紀6図は
この冷却ダクト21を内紙した箔巻巻解4を示している
。なお、第6図では?0巻巻線をM IJ’y i−る
金属シート2と絶脈シート3とを1枚のシートとして示
している。前記冷却ダク)21け、金用または耐熱性合
成樹脂からなる長尺の扁平断面のパイプ20(断面形状
の例を第5図(b)、 (C)に示す)を扁平な面が金
属シートまたは絶縁シートに接するように上下に蛇行さ
せて折曲し、これを円筒状l二彎曲させることl二よっ
て製作されたもので、前記扁平断面パイプ20の一端は
下方C二延出されて冷媒入口22aとされ、他端は上方
【二延出されて冷媒出口22bとされている。そして、
この冷却ダクト21げ、箔巻巻#i!4の製作時+ニー
g+二巻込むことC二よって第6図2−示すようC二巻
線内に内蔵されており、その冷媒人口22a及び冷媒出
口22bけ冷媒を導く塙、液管(図示しないが第1図と
同様g二配管されている)と接続されている。なお、こ
の変圧器ld1冷媒ダクト以外は第1図C二示した従来
の変圧器と同じ構成となっている。ただし、前記冷却ダ
クト21を金属製とした場合は。
FIG. 5 (-) shows the cooling duct 21, and FIG. 6 shows the foil-wrapped package 4 with the cooling duct 21 inside. In addition, in Figure 6? A metal sheet 2 with a 0-turn winding and a pulse-interrupting sheet 3 are shown as one sheet. The cooling duct) 21 is a long flat cross-section pipe 20 made of metal or heat-resistant synthetic resin (examples of the cross-sectional shape are shown in FIGS. 5(b) and 5(C)) with a flat surface made of a metal sheet. Alternatively, it is manufactured by meandering up and down so as to touch an insulating sheet and bending it into a cylindrical shape, with one end of the flat cross-section pipe 20 extending downward to carry the refrigerant. It serves as an inlet 22a, and the other end extends upward to serve as a refrigerant outlet 22b. and,
This cooling duct 21 is wrapped in foil #i! 4 + knee g + 2 winding C 2 Therefore, as shown in Fig. 6 2, it is built into the C 2 winding, and its refrigerant port 22a and refrigerant outlet 22b are refrigerant guide walls and liquid pipes (not shown). Although it is not connected, it is connected to the g2 piping (as in Fig. 1). Note that this transformer has the same structure as the conventional transformer shown in FIG. 1C-2 except for the refrigerant duct ld1. However, if the cooling duct 21 is made of metal.

その冷媒人口2211及び冷媒出口22bと前記導液管
とを従来と同様に絶縁パイプを介して接続することが必
要となるが、冷却ダクト21を合成樹脂製とした場合に
は、その冷媒入口22a及び冷媒出口22bを直接導液
管に接続してもよい。
Although it is necessary to connect the refrigerant population 2211 and the refrigerant outlet 22b to the liquid guide pipe via an insulated pipe as in the conventional case, when the cooling duct 21 is made of synthetic resin, the refrigerant inlet 22a And the refrigerant outlet 22b may be directly connected to the liquid conduit.

しかして、この箔巻変圧器においては、冷却ダクト21
を上記のような構成としているから、冷却ダクト21を
長尺の扁平断面パイプ20を折曲することで製作するこ
とができ、従ってその製作は容易であるし、さらには冷
却ダクト全体を1本の扁平#I管20で形成することが
できるから、溶接の必要は全くなく、従って冷却ダクト
から溶接部をなくして、溶接部の腐食やクラックの発生
C二よる冷媒漏れの問題をなくすことができる。また、
前記扁平断面パイプ20を蛇行でせた冷却タクト21は
、従来の冷却ダク)l1比べて柔軟性に優れるから、ダ
クト内外周の巻線ダクト谷部との宣滑性もよく、さらに
冷却ダクト21を蛇行構造とすているために巻線全周C
二冷媒を蛇行させながら流すことができるから1巻線全
周を略均等(二冷却することができる。しかも、冷却タ
ークト21をIf4成する扁平断面パイプ20は、ダク
ト全長が同一径であるために冷媒を効率良く循環させる
ことができるから、巻線を効率良く冷却することができ
る。
However, in this foil-wound transformer, the cooling duct 21
Since the cooling duct 21 has the above structure, the cooling duct 21 can be manufactured by bending the long flat cross-section pipe 20, which is easy to manufacture. Since it can be formed with a flat #I pipe 20, there is no need for welding at all, and therefore, there is no welded part from the cooling duct, and the problem of refrigerant leakage due to corrosion and cracking of the welded part C2 can be eliminated. can. Also,
The cooling tact 21, which is formed by meandering the flat cross-section pipe 20, is more flexible than the conventional cooling duct (l1), so it has good sliding properties with the valleys of the winding duct on the inner and outer peripheries of the duct. Since the winding has a meandering structure, the entire circumference of the winding C
Since the two refrigerants can flow in a meandering manner, the entire circumference of the first winding can be cooled almost equally (two times).Furthermore, since the flat cross-section pipe 20 that forms the cooling turret 21 has the same diameter over the entire length of the duct, Since the refrigerant can be efficiently circulated, the windings can be efficiently cooled.

なお、この実施例では冷却ダクト21を単一のものとし
ているが、この冷却ダクト21は分割形のものとしても
よく、その場合は各ダクトをそれぞれ1本の局平卸り面
パイプで形成すればよい。
In this embodiment, the cooling duct 21 is a single type, but the cooling duct 21 may be of a split type. In that case, each duct may be formed of a single horizontal pipe. Bye.

第7図及び第8図は本発明の他の実施例を示したもので
、これけ冷却夕゛り)21を分割形のものとすると共に
、各ダクトを、扁平断面パイプ20を左右に蛇行させた
構成としたものである。なお、図中第5図及び第6図と
対応するもの1−は同一符号を付してその説明を省略す
る。
Figures 7 and 8 show another embodiment of the present invention, in which the cooling tube 21 is of a split type, and each duct is arranged so that the flat cross-section pipe 20 meanders left and right. The configuration is as follows. Components 1- in the drawings corresponding to those in FIGS. 5 and 6 are designated by the same reference numerals, and their explanations will be omitted.

[発明の効果] 本発明の箔巻変圧器は上記のように、巻線内(二内蔵さ
れる冷却ダクトを扁平断面パイプを蛇行させた構成とし
たものであるから、冷却ダクトの製作が容易であると共
に、冷却ダクトから腐食やクラックを生じやすい溶接部
をなくして溶接部からの冷媒漏れの問題をなくすことが
できるから運転寿命を永くすることができる。
[Effects of the Invention] As described above, the foil-wound transformer of the present invention has a cooling duct built into the windings, which is constructed by meandering flat cross-section pipes, making it easy to manufacture the cooling duct. In addition, it is possible to eliminate the welded parts that are prone to corrosion and cracks from the cooling duct, thereby eliminating the problem of refrigerant leakage from the welded parts, so that the operating life can be extended.

なお、本ダクトを断面形状が円形の細管で構成すること
も出来るが、以下f二連べる如く扁平断面パイプとした
方が大きなメリットがある。
Although this duct can be constructed from a thin tube with a circular cross-section, it is more advantageous to use a flat pipe with a flat cross-section, as shown in the following.

第9図はダクトを円形細管とした場合(同a図)と扁平
断面パイプとした場合(同す図)のダクトとシート巻線
との組合せ状態を示した部分拡大図である。第6図の部
分拡大図に相当する。
FIG. 9 is a partially enlarged view showing the combination of the duct and the sheet winding in the case where the duct is a circular thin tube (FIG. 9A) and the case where the duct is a flat cross-section pipe (FIG. 9). This corresponds to a partially enlarged view of FIG.

シート巻+ti!は巻線時(二たるみが出ないように張
力を与えられて巻かれるため拡大図においては平面とみ
なすことが出来、ダクトは2つの平面(1挾まれたパイ
プとみなされる。
Sheet roll + ti! When the wire is wound, it can be seen as a flat surface in an enlarged view because it is wound under tension so that there is no slack, and the duct can be regarded as a pipe sandwiched between two flat surfaces.

同図+=Mられる如く、円形祁1計のダク)l1比べ扁
平断面パイプのダクトの場合にはシート巻五知との接触
面積が著しく大きい。これにより次の如きメリットがあ
る。
As shown in the same figure, the contact area with the sheet-wound gochi is significantly larger in the case of a duct with a flat cross-section pipe than with a circular duct. This has the following advantages.

(1)冷却ダクトとしての性能が著しく向上する。(1) Performance as a cooling duct is significantly improved.

冷却ダクトの目的はシート巻線内に発生するジュール熱
をシート巻線から専うことである。熱伝達M′は伝達面
積ζ二比例するため扁平断面パイプのダクトの方が著し
く特性がよい。
The purpose of the cooling duct is to divert the Joule heat generated within the sheet winding away from the sheet winding. Since heat transfer M' is proportional to the transfer area ζ, a duct with a flat cross-section pipe has significantly better characteristics.

(2)冷却ダクトとシート巻線の接触1ftiでの似械
的圧力が減少し、巻線の絶縁信頼性が向上する。
(2) The quasi-mechanical pressure at 1fti of contact between the cooling duct and the sheet winding is reduced, and the insulation reliability of the winding is improved.

第1図および第 図に示されるように本変圧器のシート
巻線−、金ハシートと絶縁シートを重ね合せて、それぞ
れ(−張力を与えながら巻回したもので巻回間の電気的
絶縁は絶縁シートだけに頼っている。絶縁シートを〃く
すると熱伝達性能が低下することと、省、絆体積C二占
める金属シートの割合が減少することのためCユ不紅済
な変圧器■二なってしまう。そのため絶縁シートの厚さ
は数10/1mの悼〈薄いもの1ニされている。
As shown in Figure 1 and Figure 1, the sheet winding of this transformer is made by overlapping a gold sheet and an insulating sheet and winding them while applying tension, and the electrical insulation between the turns is It relies only on the insulating sheet.If the insulating sheet is removed, the heat transfer performance decreases, and the ratio of the metal sheet to the bond volume C2 decreases, making the transformer unreliable. Therefore, the thickness of the insulating sheet is several tens of meters (thinner).

この変圧器において、第9図(a)の如き円形細管で構
成さ力たダクトの場合細管と金属シートの間に挾まれた
絶縁シートは細管との接触面で大きな圧力な蛍は損傷し
、ために絶縁被接を生するケースが多い。特に変圧器の
負荷側で短絡事故が発生した場合【二け、短絡電流によ
って生ずる大きな電磁機械力【二よりこの危険が更にa
くなる。
In this transformer, if the duct is made up of circular thin tubes as shown in Figure 9(a), the insulating sheet sandwiched between the thin tubes and the metal sheet will be damaged by large pressure at the contact surface with the thin tubes. Therefore, there are many cases where insulation occurs. Especially when a short circuit accident occurs on the load side of a transformer [Secondly, the large electromagnetic mechanical force generated by the short circuit current]
It becomes.

ダクトを扁平断面パイプとした場合には、接触面積が著
しく増大するため圧力が減少し絶縁シートが損傷しなく
なり信頼性が向上する。
When the duct is made of a flat cross-section pipe, the contact area increases significantly, reducing pressure and preventing damage to the insulating sheet, improving reliability.

捷だ、他のメリットとして第9図のダクトの厚さdを一
定としたとき、円形細管のダク)lニルべ扁平断面パ1
ブによるダクトは断面積が大きく、パイプ長が短くなり
曲は部分が少なくなるメリットがある。前記の如く、巻
組体積内の金属シートの割合を大きくするためCニダク
トの厚さdけ3 mJ程度であるが、ダクト内C二冷媒
をや〆1環させて巻線を冷却する場合、断面積が太きく
、循環路が知<。
Another advantage is that when the thickness d of the duct in Fig. 9 is constant, the circular thin duct)
Ducts with pipes have a large cross-sectional area, short pipe length, and have the advantage of fewer curved sections. As mentioned above, in order to increase the proportion of the metal sheet in the winding volume, the thickness of the C2 duct is approximately 3 mJ, but when the C2 refrigerant in the duct is cooled by a ring, The cross-sectional area is large and the circulation path is well defined.

曲がり部が少なくなることは (1)循環のための損失水頭が少なくなり酊媒の圧力が
低くなり絶縁パイプ11の肉浮を脅、<出来る (2)冷媒の圧力が低くなり、循環路中の接精部(11
−10間、11−16間など)をf7u阜な構造に出来
、信頼性が増す (8)循環ポンプ7を小形軽↓1に出来る(4)容易5
二循環iを増加させることが出来Bため冷媒の入口、出
口温用筆を小さくすることがEiJ能である。
Fewer bends mean (1) less water head loss for circulation, which lowers the pressure of the intoxicant, which threatens the floating of the insulated pipe 11; The insemination part (11
-10, 11-16, etc.) can be made into a f7u secure structure, increasing reliability (8) Circulation pump 7 can be made smaller and lighter (4) Easy 5
Since it is possible to increase the two-circulation i, it is possible to make the refrigerant inlet and outlet warmer smaller.

これにより巻線温度が平均化さ7″1.絶縁物の熱劣化
割合が均一化されて寿命が改畳されるC
This equalizes the winding temperature 7''1. The rate of thermal deterioration of the insulation becomes uniform and the lifespan is improved.C

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来の箔巻変圧器を示す断面図、第2図及び粥
3図はそれぞれ従来の箔巻変圧器に用いられている冷却
ダクトの斜視図、第4図は同じくダクト端部の拡大断面
斜視図、第5図及び第6図は本発明の一実施例を示す冷
却ダクトの斜視図及び冷却ダクトを内蔵した箔巻巻線の
平面図、第7図及び第8図d本発φjの他の実施例を示
す冷却ダクトの斜視図及び冷却ダクトを内蔵した箔巻巻
線の平面図、第9図は本発明におけるJiii平ダクト
と円形ダクトの比較を示す側面図である。 4・・・箔巻巻線   2o・・・綿jfL断面パイプ
21・・・冷却ダクト 代甥人 弁理士 則 近 意 佑(はが1名)第1図 第7図 第8図 第9図 (0,2
Figure 1 is a cross-sectional view of a conventional foil-wound transformer, Figures 2 and 3 are perspective views of a cooling duct used in a conventional foil-wound transformer, and Figure 4 is a sectional view of the end of the duct. An enlarged sectional perspective view, FIGS. 5 and 6 are a perspective view of a cooling duct showing one embodiment of the present invention, a plan view of a foil-wound winding incorporating a cooling duct, and FIGS. 7 and 8 d. A perspective view of a cooling duct showing another embodiment of φj, a plan view of a foil-wound winding incorporating the cooling duct, and FIG. 9 is a side view showing a comparison between a Jiii flat duct and a circular duct in the present invention. 4...Foil-wound winding 2o...Cotton jfL cross section pipe 21...Cooling duct Nephew Patent attorney Noriyoshi Chika (1 person) Fig. 1 Fig. 7 Fig. 8 Fig. 9 ( 0,2

Claims (1)

【特許請求の範囲】[Claims] 金属シートと絶縁シートを重ねて巻いた箔巻巻線を備え
、かつ巻線内に冷媒が通される冷却ダクトを内蔵した箔
巻変圧器において、前記冷却ダク
In a foil-wound transformer that includes a foil-wound winding made of a metal sheet and an insulating sheet wrapped in layers, and has a built-in cooling duct through which a refrigerant is passed through the winding, the cooling duct is
JP9688783A 1983-06-02 1983-06-02 Foil wound transformer Pending JPS59222912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9688783A JPS59222912A (en) 1983-06-02 1983-06-02 Foil wound transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9688783A JPS59222912A (en) 1983-06-02 1983-06-02 Foil wound transformer

Publications (1)

Publication Number Publication Date
JPS59222912A true JPS59222912A (en) 1984-12-14

Family

ID=14176899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9688783A Pending JPS59222912A (en) 1983-06-02 1983-06-02 Foil wound transformer

Country Status (1)

Country Link
JP (1) JPS59222912A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014504806A (en) * 2011-02-02 2014-02-24 シーメンス リミタダ Dry distribution transformer
WO2018162568A1 (en) * 2017-03-10 2018-09-13 Abb Schweiz Ag Non-liquid immersed transformers with improved coil cooling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014504806A (en) * 2011-02-02 2014-02-24 シーメンス リミタダ Dry distribution transformer
CN103620709A (en) * 2011-02-02 2014-03-05 西门子有限公司 Dry distribution transformer
WO2018162568A1 (en) * 2017-03-10 2018-09-13 Abb Schweiz Ag Non-liquid immersed transformers with improved coil cooling
CN110383403A (en) * 2017-03-10 2019-10-25 Abb瑞士股份有限公司 With the cooling non-liquid soaking transformer of improved coil
KR20190122795A (en) * 2017-03-10 2019-10-30 에이비비 슈바이쯔 아게 Non-immersion transformers with improved coil cooling
US11355273B2 (en) 2017-03-10 2022-06-07 Hitachi Energy Switzerland Ag Non-liquid immersed transformers with improved coil cooling
CN110383403B (en) * 2017-03-10 2022-09-13 日立能源瑞士股份公司 Non-liquid immersed transformer with improved coil cooling

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